brunning



Sept. 1, 1925.

E. J. BRUNNING REFRIGERATING APPARATUS 2 Shoots-Shoot 1 Sept. 1, 1925." v

, E. J. BRUNNING REFRIGERATING APPARATUS 2 Sheets-Shoot 2 mei May 5, 1920 iu gz Willa 57PM I a/MP Patented Sept. 1, 1925.

UNITED STATES ERNEST J. BRUNNING, or CHICAGO, ILLI PATENT OFFICE.

NO'IS, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 DELCO-L IGHT COMPANY, OF DAYTON, OHIO, A CORPORATION OF DELAWARE.

REFRIGERATIN G APPARATUS;

Application filed May 3,

To all whom it may concern:

Be it known that I, ERNEST J. BRUNNING, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Refrigerating Apparatus, of which the following isa specification.

My invention has relation to refrigerating apparatus of the type in which a refrigerant such as sulphur dioxide is employed as the refrigerating agent and the object of.

my invention is to provide a simple, compact and eflicient construction and arrangement of the pump and condenser chambers and their mechanisms including the condenser cooling coils, pump and its motor such as an electric motor. In addition to improving the construction and mode of operation of this portion of the apparatus I have also simplified the construction in many respects and provide a structure which can be made at a minimum of cost, as will be apparent from the description hereinafter given."

In the drawings Fig. 1 is a sectional elevation illustrating my pump and condenser mechanisms and electric actuating motor; Fig. 2 a'sectional elevation on the line 2-2 of Fig. 3 looking in the direction of the arrow; Fig. 3 a central longitudinal section of the cylinder in which the pump and con denser chambers are formed; Fig. 4 a section on the line 4-4 of Fig. 3 looking in the direction of the arrow; and Figs. 5"and 6 sectional elevations on the lines 5-5-and 66 respectively of Fig. 1 looking in the direction of the arrow.

Referring to' the present embodiment of my invention as herein shown, the pump chamber and condenser chamber 1 are formed in the same body or casting, and the electric motor for driving the pump contained within the pump chamber is by'pref erence mounted upon the same base plate in order to have a suitable support and preserve the proper alignment. The, base plate consists of suitable channel bars A which is the preferred construction. chamber 1 and the condenser chamber 2 are formed within a single unitary structure which here consists of a body or casting 3 preferably, though not necessarily, cylindrical in form and having a front cap or cover The pump 1920. smal- No. 378,363.

tially horizontal portion through whichpasses a port 8. This port constitutes the communication between the pump chamber 1. and the condenser chamber 2 and the same is governed by a suitable valve such as the needle valve 9 passing through an opening in the boss 10 and the upper wall of the cylinder 3. such valve having a stem screw threaded into such wall. The valve stem is provided with a packing gland 11 and a nut 12. By rotating the valve stem in one direction or the other the port 8 may be opcnedtor closed at will thereby opening or closing said communication between the chambers 1 and 2.

The partition 6 is provided on its opposite sides and in the portions corresponding with the body of oil as indicated in chamber 1, and by the body of liquid refrigerant as indicated in chamber 2 with a series of heat radiating projections or fins 13 and 14, for the purpose of radiating the heat from said bodies of liquid to the partition and thence to the walls of the cylinder in order that said liquids may be cooled.- The chamber 1 is provided with additional heat radiating fins such as the fins 15 which extend in parallel vertical planes along the bottom and walls of such chamber 1. Likewise and by preference condenser chamber 2 is provided with additional heat radiating fins 16 which extend along the bottom and partways up the sides of such chamber.

Referring to the front cover 4 which is secured to the cylinder 3 in suitable manner as by the screws 17, the same is provided with suction ports and passages adapted to communicate with the delivery end of the refrigerating coils and also with a bearing for the'drive shaft of the pump. These ports and passages are controlled by valves which gral with the cover 4. As shown in detail in Fig. 5 this cover is provided with a boss partially up the sides of the interior extension or casing 18 which is provided with a suction passage 19 communicating with the pipe 20 leading from the refrigerating coils (not shown). This pas- "sage 19 communicates with a chamber 21 through a port 22 formed in a valve seat.

'. needle valve 26, this valve governing the communication between said port 25 and the port and passage 27'which leads directly to the pump. The stem 28 of this valve is screw threaded .into said casing and by turning the same in one direction or the other the port 25 is open or closed at will. The valve stem is provided with a suitable packing 29 and nut 30. The chamber 21 is closed at its upper end in suitable manner as by means of the screw plug 31.

A pump 32 of any suitable or desired construction (being preferably though not necessarily the gear type of pump such as illustrated in Leonard and Cutler Reissue Patent No. 14,112 reissued on-April 18, 1916) is located within the pump chamber 1 and is provided with a pump shaft 33 extending through an elongated bearing opening in the boss extension or hearing 34 forming a part of the cover 4. This shaft is provided with the packing 35 and the i 'land nut 36. The pump is driven preferably by an electric motor 37 preferably through the flexible coupling 38 by the ar mature shaft 39 and the pump shaft 33. By

preference a drip pan 40 is arranged below the bearing 34 in order to catch any drippings of oil.

The pump 32 is practically submerged in a body of oil contained-within the pump chamber 1 preferably at the level indicated at 41. Also by preference the oil inlet openings indicated at 42 are located at the bottom of the pump structure in order that t e pump may be supplied with a sufficient amount of oil even though the supply is diminished below the level ndicated at 41. The compressed gas refrigerant is delivered from this pump together with oil through the outlet pipe 43 which extends upwardly through and above the body of oil and which is provided at its upper end with a perforated delivery pipe or nozzle'44.- This latter pipe is closed at its outer end and provided with one or more rows of perforations 45 whereby the gas and oil under compression are discharged or. sprayed against the interior walls of the chamber land the gas and oil effectually separated thereby dispensing with baffle plates-or similar devices for such purpose. The gas thus separated from the oil passes through the port 8 into as by means of the screws 46 and'contains v I the liquid refrigerant discharge passage and also the water connections for the cooling coils within the condenser chamber. As shown in detail in Fig. 6 the cover is provided with a boss formlng a casing 47 within which is arranged the discharge port and passage 48 governed by a suitable valve such as the needle valve 49 adapted to open or close said port and thereby govern the communication between said port and a discharge port 50 from the condenser chamber. The passage 48 communicates with the pipe 51 which leads either to an expansion valve or to, the refrigerating coils direct, accordingly as I employ the float operated valve (hereinafter referred to) or not. The valve 49 is screw threaded in said casing 47 so that by turning it in one. direction or the other the port 48 is opened or closed. This stem preferably has a packing 52 and a gland nut 53.

In the present instance I employ by preference and as a substitute for the usual expansion valve a float operated valve for controlling the communication between the condenser chamber 2 and the port and passage 50. As shown in Fig. 1 a needle valve 54 governs a port 55- in a seat .formed in a bracket 56 which" is secured to and projects inwardly from the inner side of the cover 5. This-bracket also provides a bearing for the valve 54 so that such valve may reciprocate towards and away from its seat in order to close and open said port 55. This valve is float operated to which end a float 57 which floats in the body of liquid refrigerant whose level is indicated at 58, is operatively connected with'the outer end of the valve 54 by means of the lever 59 pivoted to said bracket 56 and having a crank arm 60 pivotally connected with the outer end of said,

needle valve. By means of this float device a predetermined level of liquid refrigerant is maintained in the chamber 2 and the ex-' cess amount of such refrigerant is automatically passed from such chamber to the refrigerating coils.

Within the condenser chamber there are arranged the cooling means which herein consist of the circular cooling coils 61 which by preference are substantially of the same diameter as such chamber. These coils are adapted to circulate cold water which enters through the pipe connection 62 and leaves through the pipe connection 63 in the 4 cover 5. These coils are thus compactly arranged within the chamber 2 partly within the body of liquid refrigerant and partly thereabove, and the same also encircles the float mechanism whereby a compact and balanced arrangement is provided.

Moreover the entire apparatus above described has further features of compactness with any cooling coils within the ducing the costs.

and balances such as represented by the aligmnentindicated in Fig. 1 of the motor pump and the two chambers 1 and 2. Furthermore the ump and condenser chambers may thus be ormed by the same single and simple cylinder or casting which is of such character that it can be easily and economically made, besides which the machine work which is reduced to a minimum can be very conveniently and rapidly performed. Likewise the front and back covers are castings in which the ports and passages above referred to are integrally or directly formed thereby simplifying the structure and re- Again the construction shown, particularly the employment of the heat radiating fins, permits me to dispense P p chamber, so that the cooling coil 61 may be relied upon to provide sufiicient cooling e1- fect for both chambers. By reason of the provision of the fins 13 and 15 the heat is radiated to the partition and to the walls of the cylinder 3 and neutralized by the cold conducted bv the fins 14 and 16, with the result that the chamber 1 and the body of oil and the pump are kept at a sufliciently low temperature and prevented from becoming unduly heated.

My construction is not only simple and compact but is also made and designed for inexpensive manufacture,' particularly in that the machine work is both reduced to a minimum and made simple and readily accessible. In addition, the parts are capable of ready assembly and .disa'ssembly for original manufacture and for inspection and repair, in that the heads or covers of the,

cylinders are removable as units with the contained devices mounted thereon.

I claim:

1. The combination of a horizontally disposed casing having end walls and an upright transverse partition dividing the interior thereof into a pump-chamber, and a. condenser chamber, saidpartition having a port communicating between the two chambers, a pump in the pump chamber, cooling means in the condenser chamber, and driving means traversing the end wall of the pump chamber for driving said pump.

2. The combination of a casing having a transverse partition dividing the interior thereof into a pump chamber and a con denser chamber, said partition having a port communicating between the two chambers, a valve for governing said port, a pump in thepump chamber, and cooling means in the condenser chamber.

3. Thecombipation of a casing having a transverse partition dividing the interior thereof into a pump. chamber nd a condenser chamber, said partition having an offset provided with a port communicating between the two chambers, 21. valve governing said port, a pump in the pump chamber, and cooling means in the condenser chamber.

4:. The combination of a casing having a transverse partition dividing the interior thereof into a piunpchamber and a condenser chamber, said partition having an offset provided with a port communicating between the two chambers, a valve governing said port, a pump in the pump chamber, and cooling means in the condenser chamber, said valve being mounted in the wall of the casing and extending therethrough.

5. The combination of a casing having a transverse partition dividing the interior thereof into a pump chamber and a condenser chamber, said partition having fins on opposite sides, a pump in the pump chamber, and cooling means in the condenser chamber.

6. The combination of a casing having a transverse partition dividing the interior thereof into a pump chamber and a condenser chamber, said pump chamber having heat radiating fins, one set arranged on the bottom of such chamber and the other set on the partition, and a pump in the pump chamber, and cooling means in the con, denser chamber.

' 7 The combination of\.a casing having a.

.transverse partition dividing the interior thereof into a. pump chamber and a condenser chamber, said two chambers having similar sets of fins, one set arranged on the bottom of the chamber and another set on the partition, a pump in the pump chamber, and cooling means in the condenser chamber.

8. The combination of a horizontally disposed elongated casing having a partition transverse to the longitudinal axis thereof and dividing the interior of the easing into a pump chamber and a condenser chamber, front and back covers secured to the casing,

lUU

said covers containing respectively the inlet and the discharge assages, a pump located within the pump ciamber and mounted on the inner side of the front cover, a cooling coil located within the condenser chamber and mounted on the inner side of the back cover, a motor disposed substantially in alignment with the longitudinal axisof the casing, and a driving connection between the motor and piunp traversing said front cover.

9. The combination of a horizontally disposed casing having an upright transverse partition dividing the interior. thereof into a pump chamber and a condenser chamber, front and back covers secured to said casin such covers containing-respectively the in ct passages and the discharge passages, a rotary pump located within the pump chamber and having a drive shaft traversing said front cover, cooling means located within the condenser chamber, and a motor in substantial axial alignment with said horizontally disposed casing, said motor having its armature shaft parallel with said drive shaft and connected therewith.

10. The'combination of a casing having a transverse partition dividing the interior thereof into a pump chamber and a condenser chamber, front and back covers secured to said casing, such covers containing respectively the inlet passages and the discharge passages, a pump located within the pump chamber, cooling means located within the condenser chamber, and an automatic valve mounted on the back cover and located within the condenser chamber for controlling the discharge passages in such back cover.

11. The combination of a casing having a transverse partition dividing the. interior thereof into a pump chamber and a condenser chamber, front and back covers secured to said casing, such covers contalning respectively the inlet passages and the discharge passages, a pump located within the chamber, cool' means located within the condenser cham r, and a float operated valve located in the condenser chamber and mounted on the back cover for controlling the discharge passages in such back cover.

12. The combination of a casing having a transverse partition dividing the interior thereof into a pump chamber and a condenser chamber, front and back covers for closing the ends of the casing, a pump in the pump chamber, and a horizontally disposed cooling coil located within the condenser chamber and mounted upon the back cover and removable as a unit therewith,

- said back cover having a discharge passage for the liquid refrigerant, a valve for controlling said means located within the coil and adapted to govern said valve.

13. The combination of a casing having a transverse partition dividing the interior thereof into a pump chamber and a con-- denser chamber, front and back covers for closing the ends of the casing, a pump in the pump chamber, and a horizontally dispassage, and a float operated posed cooling -coil located within the condenser chamber and mounted upon the back cover and removable as a unit therewith, said back cover having a discharge passage for the liquid refrigerant, a valve for con-4 trolling sald passage and mounted upon the back cover and a float operated means governing said valve and also mounted on the back cover.

14. The combination of a horizontally dlS- posed cylindrical casing having an upright.

transverse partition dividing the interior thereof into a pump chamber and a condenser chamber disposed side b y side anda pump chamber and a condenser chamber,

removable end covers secured to the casing, a cooling coil located within .the condenser chamber and mounted on the inner side 'of an end cover, a pump located within the pump chamber and mounted on the inner side of an end cover, a motor disposed substantially in longitudinal alignment with the casing, and a driving connection between the motor and pump traversing. the

end cover on which the pump is mounted.

16. A refrigerating apparatus comprising a condenser chamber having an inlet port, a

motor, a compressor driven thereby and communicating with said inlet port, andcooling means located within the condenser 'chamber, said condenser chamber having a removable cover containing-a discharge passage, and an automatic valve mounted on said cover and located within the condenser chamber for controlling the discharge passage in such cover.

ERNEST J BRUNNING. 

